$A$ freshly unfertilized egg of a hen contains:

Secretion of large quantities of estrogen causes:

Identify $X, Y$ and $Z$ from the figure:
$Z-Y-X$

The figure shows a section of human ovary. Select the option which gives the correct identification of either $A$ or $B$ with function/characteristic.

The hormone that maintains the secretory activity of the corpus luteum as well as the increase in the size of the mammary glands is

The given figure shows a longitudinal section of the female reproductive system. Which three parts among $A-F$ are correctly identified?